Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X10
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X10 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 40mm and 10mm give 4 controllable stop positions across a 50mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 140 mm
- Stroke 210 mm
- Total travel50 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X10
The SCT50X40X10 is a 50 mm bore multi-position air cylinder that delivers four distinct rod stops from two independent strokes on a common axis. With a 40 mm stroke on the first section and a 10 mm stroke on the second, the reachable positions are 0 mm (fully retracted), 40 mm, 10 mm, and the total travel of 50 mm. Each piston section generates approximately 982 N of push force at 0.5 MPa, giving designers a compact way to sequence two fixed linear moves without additional actuators.
This tie-rod cylinder uses a 20 mm diameter piston rod with M16x1.5 threads and PT1/4 ports. The adjustable air cushion at each end (21 mm cushion length) decelerates the load smoothly. The body length A(SCT) is 243 mm, providing a rigid tandem assembly. The standard TPU seals suit operating temperatures from -20 to +70 °C, making it a reliable choice for general industrial multi-stop tasks.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X10 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X10 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 40 / 10 mm |
| Total travel | 50 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 21 mm |
| Max stroke / section | Up to 500 mm standard |
Specifications follow the official AirTAC SCT (multi-position) datasheet. SCT is available in bores 32–100; each of the two sections has a 500 mm max standard stroke (800 mm max). Confirm against the product label before installation. Thread options: PT (standard) / G.
Stop Positions (4)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 40 mm |
| P2 (section 2) | 10 mm |
| P3 (both extended) | 50 mm |
Positions are set by pressurising section 1, section 2, or both. With equal strokes you get 3 distinct positions; with unequal strokes you get 4.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Force is per actuated piston section (single-piston, same as the SC bore): push uses the full bore area, pull subtracts the rod area. Size with a safety margin.
Model Code: Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X10
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×40 | Stroke 1 (section 1) in mm. |
| ×10 | Stroke 2 (section 2) in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod), SCD (double rod), SCJ (adjustable stroke). SCT mounting: Basic, FA, FB, CA, CB, LB. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Where the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X10 Is Used
Two-Depth Pressing
Advance the rod to 10 mm for a pre-clamp position, then extend the second section to the full 40 mm for the main pressing stroke, achieving two controlled depths from one actuator.
Part Sorting Gate
Use the 10 mm and 40 mm stops to divert parts to two different chutes from a single conveyor point, with the 0 mm position allowing a third straight-through path.
Sequential Staking
Perform a light 10 mm staking operation followed by a full 40 mm forming stroke in one automated sequence, eliminating the need for a second cylinder and valve.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X10 the Right Cylinder?
Choose the SCT50X40X10 when a process requires two short, different-length linear advances from a single mounting point—this avoids the complexity and plumbing of two separate cylinders. For higher force, step up to the 63 mm bore, which delivers about 1559 N of push per section at 0.5 MPa. If a lighter, more compact solution is acceptable, the 40 mm bore provides roughly 628 N per section.
When replacing an existing SCT, match the bore (50 mm), both stroke values (40 mm and 10 mm), port thread (PT), and mounting style exactly. This basic model has no magnet or mounting bracket; if your application uses reed sensors, specify the -S suffix. For strokes over 50 mm per section, consider external guides to protect the rod from side loads.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 40 + 10 mm suit your layout?
- ✓ Required force at your working pressure
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Plumb the two sections to the correct valves for each stop.
- check Adjust end cushion screws for smooth stops.
- check Use SCT mounting accessory (FA / FB / CA / CB / LB).
- check Installation by qualified personnel per AirTAC docs.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X10 FAQ
This model provides 4 discrete stop positions because the two section strokes are different (40 mm and 10 mm). The exact rod positions are 0 mm (retracted), 40 mm, 10 mm, and the total extended length of 50 mm. You select a position by pressurizing section one, section two, or both simultaneously.
Yes, the SCT50X40X10 is designed to replace two individually mounted 50 mm bore cylinders where the strokes are 40 mm and 10 mm. It provides the same two discrete advances from a single body, reducing mounting hardware and simplifying the pneumatic circuit. Ensure the replacement matches the original's port thread (PT) and mounting style.
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